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周冰倩, 章学恒, 方芳, 闫铎, 唐述文, 余玉洪, 王世陶, 张永杰, 刘相满, 赵亦轩, 金树亚, 刘忠, 孙志宇. 基于SiPM读出的塑料闪烁体探测器时间性能研究[J]. 原子核物理评论, 2020, 37(3): 749-756. DOI: 10.11804/NuclPhysRev.37.2019CNPC53
引用本文: 周冰倩, 章学恒, 方芳, 闫铎, 唐述文, 余玉洪, 王世陶, 张永杰, 刘相满, 赵亦轩, 金树亚, 刘忠, 孙志宇. 基于SiPM读出的塑料闪烁体探测器时间性能研究[J]. 原子核物理评论, 2020, 37(3): 749-756. DOI: 10.11804/NuclPhysRev.37.2019CNPC53
Bingqian ZHOU, Xueheng ZHANG, Fang FANG, Duo YAN, Shuweng TANG, Yuhong YU, Shitao WANG, Yongjie ZHANG, Xiangman LIU, Yixuan ZHAO, Shuya JIN, Zhong LIU, Zhiyu SUN. Time Performance Study of Plastic Scintillator Detector with SiPM Readouts[J]. Nuclear Physics Review, 2020, 37(3): 749-756. DOI: 10.11804/NuclPhysRev.37.2019CNPC53
Citation: Bingqian ZHOU, Xueheng ZHANG, Fang FANG, Duo YAN, Shuweng TANG, Yuhong YU, Shitao WANG, Yongjie ZHANG, Xiangman LIU, Yixuan ZHAO, Shuya JIN, Zhong LIU, Zhiyu SUN. Time Performance Study of Plastic Scintillator Detector with SiPM Readouts[J]. Nuclear Physics Review, 2020, 37(3): 749-756. DOI: 10.11804/NuclPhysRev.37.2019CNPC53

基于SiPM读出的塑料闪烁体探测器时间性能研究

Time Performance Study of Plastic Scintillator Detector with SiPM Readouts

  • 摘要: 研究了基于硅光电倍增管(SiPM)双端读出的面积为10 cm ×10 cm的薄塑料闪烁体探测器的时间性能。239Pu放射源测试结果显示:(1)在多支SiPM串连读出方式下,随着SiPM数量的增加,探测器时间分辨逐渐变好;(2)在固定12支SiPM数量不变的情况下,并联支路越多,探测器时间分辨越差;(3)采用快时间塑料闪烁体并增加其厚度,可有效提高探测器时间分辨;(4)采用比束斑尺寸更大的塑料闪烁体,可有效提高探测器时间分辨的位置均匀性;(5)对于1 mm厚的EJ232塑料闪烁体探测器,在单端12支SiPM串行连接的情况下,可获得好于131 ps的时间分辨。这一研究对RIBLL2起始时间探测器的升级改造具有重要的指导意义。

     

    Abstract: In this paper the time performance of a plastic scintillator detector with an area of 10 cm×10 cm and read out by multiple silicon photomultipliers (SiPMs) at both ends was studied. The results tested with a 239Pu source are shown as: (1) the time resolutions became better gradually with the increase of the quantities of SiPMs connected in series; (2) when the number of 12 SiPMs was fixed, the time resolutions got worse as the number of parallel branches were increased; (3) the detector time resolutions can be effectively improved by using a fast-time plastic scintillator and adding its thickness; (4) to improve the positional uniformity of the time resolution, the scintillator with larger dimensions than beam spots should be used; (5) a resolution less than 131 ps was achieved with a 0.1 cm thickness EJ232 scintillator detector read out on each side by 12 SiPMs conncted in series. This study has importance significance for the upgrading of the start detector at RIBLL2.

     

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